Add service update VCB exchange rates

currency_rate_update/README.rst

@@ -105,6 +105,7 @@ Contributors
 * Assem Bayahi
 * Daniel Dico <ddico@oerp.ca> (BOC)
 * Dmytro Katyukha <firemage.dima@gmail.com>
+* Lam Thai Binh <binh.lt@komit-consulting.com> (VCB)
 
 Maintainer
 ----------

currency_rate_update/services/update_service_VCB.py

@@ -0,0 +1,88 @@
+# -*- coding: utf-8 -*-
+
+from datetime import datetime
+import logging
+
+from lxml import etree
+
+from .currency_getter_interface import CurrencyGetterInterface
+
+_logger = logging.getLogger(__name__)
+
+
+class VCBGetter(CurrencyGetterInterface):
+    """Implementation of Currency_getter_factory interface
+    for VCB service
+    """
+    code = 'VCB'
+    name = 'Joint Stock Commercial Bank for Foreign ' \
+           'Trade of Vietnam - Vietcombank'
+    supported_currency_array = [
+        "AUD", "CAD", "CHF", "DKK", "EUR", "GBP", "HKD", "INR", "JPY", "KRW",
+        "KWD", "MYR", "NOK", "RUB", "SAR", "SEK", "SGD", "THB", "USD", "VND"]
+
+    def rate_retrieve(self, dom, ns, curr):
+        """Parse a dom node to retrieve-
+        currencies data
+        """
+        res = {}
+        xpath_curr_rate = ("/ExrateList/Exrate[@CurrencyCode='%s']/@Transfer"
+                           % curr.upper())
+
+        res['rate_currency'] = float(
+            dom.xpath(xpath_curr_rate, namespaces=ns)[0]
+        )
+        return res
+
+    def get_updated_currency(self, currency_array, main_currency,
+                             max_delta_days):
+
+        """implementation of abstract method of Curreny_getter_interface"""
+        url = 'http://www.vietcombank.com.vn/ExchangeRates/ExrateXML.aspx'
+        # we do not want to update the main currency
+        if main_currency in currency_array:
+            currency_array.remove(main_currency)
+        _logger.debug("VCB currency rate service : connecting...")
+
+        rawfile = self.get_url(url)
+        dom = etree.fromstring(rawfile)
+        vcb_ns = {}  # there are no namespace !
+        _logger.debug("VCB sent a valid XML file")
+        rate_date = dom.xpath('/ExrateList/DateTime/text()',
+                              namespaces=vcb_ns)[0]
+        # Don't use DEFAULT_SERVER_DATE_FORMAT here, because it's
+        # the format of the XML of VCB, not the format of Odoo server !
+        rate_date_datetime = datetime.strptime(
+            str(rate_date), '%m/%d/%Y %I:%M:%S %p')
+
+        self.check_rate_date(rate_date_datetime, max_delta_days)
+        # We dynamically update supported currencies
+        self.supported_currency_array = dom.xpath(
+            "/ExrateList/Exrate/@CurrencyCode",
+            namespaces=vcb_ns)
+
+        self.supported_currency_array.append('VND')
+        _logger.debug("Supported currencies = %s " %
+                      self.supported_currency_array)
+
+        self.validate_cur(main_currency)
+        if main_currency != 'VND':
+            main_curr_data = self.rate_retrieve(dom, vcb_ns, main_currency)
+
+        for curr in currency_array:
+            self.validate_cur(curr)
+            if curr == 'VND':
+                rate = 1 / main_curr_data['rate_currency']
+            else:
+                curr_data = self.rate_retrieve(dom, vcb_ns, curr)
+                if main_currency == 'VND':
+                    rate = curr_data['rate_currency']
+                else:
+                    rate = (curr_data['rate_currency'] /
+                            main_curr_data['rate_currency'])
+
+            self.updated_currency[curr] = rate
+            _logger.debug(
+                "Rate retrieved : 1 %s = %s %s" % (main_currency, rate, curr))
+
+        return self.updated_currency, self.log_info